I recently got two Eris phones at Best Buy (one for wife, one for me). I'm contemplating exchanging them for the Incredible. I have confirmed with Best Buy that I can do this (I will obviously have to pay the $200 per phone for exchange). We still fall in the 30 day window. I'm not totally sold on going with the Incredible. With the Incredible I'm concerned with battery time and also using the phone outside. My wife's phone is still on 1.5 and mine is 2.1 leak 2. Will there be any issues with me exchanging a phone that has 2.1 on it? Thanks!